发明授权
- 专利标题： CPP Magnetoresistive head with different thickness free layers for improved signal to noise ratio
- 专利标题（中）： CPP磁阻头具有不同厚度的自由层，可提高信噪比
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申请号： US11612942申请日： 2006-12-19
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公开(公告)号： US07746603B2公开(公告)日： 2010-06-29
- 发明人: Hardayal S. Gill
- 申请人： Hardayal S. Gill
- 申请人地址： NL Amsterdam
- 专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 代理机构： Patterson & Sheridan, L.L.P.
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
摘要：
A magnetoresistive sensor and method for forming the magnetoresistive sensor. The magnetoresistive sensor includes a first layer and an antiparallel free layer disposed on the first layer. The antiparallel free layer includes a first free layer disposed on the first layer and a first ferromagnetic coupling free layer disposed on the first free layer. The first ferromagnetic coupling layer is configured to provide increased coupling between the first free layer and an antiferromagnetic coupling layer. The antiparallel free layer also includes the antiferromagnetic coupling layer disposed on the first ferromagnetic coupling free layer, a second ferromagnetic coupling free layer disposed on the antiferromagnetic coupling layer, and a second free layer disposed on the second ferromagnetic coupling free layer. The second ferromagnetic coupling layer is configured to provide increased coupling between the second free layer and the antiferromagnetic coupling layer.
公开/授权文献
- US20080144235A1 CPP Magnetoresistive Head for Data Storage Applications 公开/授权日：2008-06-19
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